CERN Accelerating science

CERN Document Server 16 ჩანაწერია ნაპოვნი  1 - 10შემდეგი  ჩანაწერთან გადასვლა: ძიებას დასჭირდა 0.56 წამი. 
1.
Terrestrial Very-Long-Baseline Atom Interferometry: Summary of the Second Workshop / Abdalla, Adam (Darmstadt, Tech. Hochsch.) ; Abe, Mahiro (Stanford U., Phys. Dept.) ; Abend, Sven (Leibniz U., Hannover) ; Abidi, Mouine (Leibniz U., Hannover) ; Aidelsburger, Monika (Munich, Max Planck Inst. Quantenopt. ; Munich U. ; Munich U., ASC ; MCQST, Munich) ; Alibabaei, Ashkan (Leibniz U., Hannover) ; Allard, Baptiste (LCAR, Toulouse) ; Antoniadis, John (Athens U.) ; Arduini, Gianluigi (CERN) ; Augst, Nadja (DLR, Berlin) et al.
This summary of the second Terrestrial Very-Long-Baseline Atom Interferometry (TVLBAI) Workshop provides a comprehensive overview of our meeting held in London in April 2024, building on the initial discussions during the inaugural workshop held at CERN in March 2023. [...]
arXiv:2412.14960.
- 105.
Fulltext
2.
Production of antihydrogen atoms by 6 keV antiprotons through a positronium cloud / Adrich, P. (NCBJ, Swierk) ; Blumer, P. (Zurich, ETH) ; Caratsch, G. (Zurich, ETH) ; Chung, M. (UNIST, Ulsan) ; Cladé, P. (Paris, Lab. Kastler Brossel) ; Comini, P. (IRFU, Saclay) ; Crivelli, P. (Zurich, ETH) ; Dalkarov, O. (Unlisted) ; Debu, P. (IRFU, Saclay) ; Douillet, A. (Paris, Lab. Kastler Brossel ; U. Evry) et al.
We report on the first production of an antihydrogen beam by charge exchange of 6.1 keV antiprotons with a cloud of positronium in the GBAR experiment at CERN. The antiproton beam was delivered by the AD/ELENA facility. [...]
arXiv:2306.15801.- 2023-11-06 - 18 p. - Published in : Eur. Phys. J. C Fulltext: 2306.15801 - PDF; Publication - PDF; Erratum - PDF;
3.
The Gbar project, or how does antimatter fall? / Indelicato, Paul (Paris, Lab. Kastler Brossel) ; Chardin, G (CSNSM, Orsay) ; Grandemange, P (CSNSM, Orsay) ; Lunney, D (CSNSM, Orsay) ; Manea, V (CSNSM, Orsay) ; Badertscher, A (Zurich, ETH) ; Crivelli, P (Zurich, ETH) ; Curioni, A (Zurich, ETH) ; Marchionni, A (Zurich, ETH) ; Rossi, B (Zurich, ETH) et al.
The Einstein classical Weak Equivalence Principle states that the trajectory of a particle is independent of its composition and internal structure when it is only submitted to gravitational forces. This fundamental principle has never been directly tested with antimatter. [...]
2014 - 10 p. - Published in : Hyperfine Interact. 228 (2014) 141-150
In : 11th International Conference on Low Energy Antiproton Physics, Uppsala, Sweden, 10 - 15 Jun 2013, pp.141-150
4.
Feebly Interacting Particles: FIPs 2022 workshop report / Antel, C. (Geneva U.) ; Battaglieri, M. (INFN, Genoa) ; Beacham, J. (Duke U.) ; Boehm, C. (Sydney U.) ; Buchmüller, O. (Imperial Coll., London) ; Calore, F. (Annecy, LAPTH) ; Carenza, P. (Stockholm U., OKC) ; Chauhan, B. (U. Iowa, Iowa City) ; Cladè, P. (Paris, Lab. Kastler Brossel) ; Coloma, P. (Madrid, IFT ; Madrid, Autonoma U.) et al.
Particle physics today faces the challenge of explaining the mystery of dark matter, the origin of matter over anti-matter in the Universe, the origin of the neutrino masses, the apparent fine-tuning of the electro-weak scale, and many other aspects of fundamental physics. Perhaps the most striking frontier to emerge in the search for answers involves new physics at mass scales comparable to familiar matter, below the GeV-scale, or even radically below, down to sub-eV scales, and with very feeble interaction strength. [...]
arXiv:2305.01715; CERN-TH-2023-061; DESY-23-050; FERMILAB-PUB-23-149-PPD; INFN-23-14-LNF; JLAB-PHY-23-3789; LA-UR-23-21432; MITP-23-015.- 2023-12-11 - 266 p. - Published in : Eur. Phys. J. C 83 (2023) 1122 Fulltext: PDF; Fulltext from Publisher: document - PDF; Publication - PDF;
In : Workshop on Feebly-Interacting Particles (FIPs 2022), CERN, Geneva, Switzerland, 17 - 21 Oct 2022, pp.1122
5.
AD-7/GBAR status report for the 2023 CERN SPSC / GBAR Collaboration
We report on the activities performed during 2022 and the plans for 2023 for the GBAR experiment..
CERN-SPSC-2023-008 ; SPSC-SR-324.
- 2023.
Fulltext
6.
Does Antimatter Fall Like Matter?: Simulation of the GBAR Experiment / Rousselle, Olivier (Paris, Lab. Kastler Brossel) ; Cladé, Pierre (Paris, Lab. Kastler Brossel) ; Guellati, Saida (Paris, Lab. Kastler Brossel) ; Guérout, Romain (Paris, Lab. Kastler Brossel) ; Reynaud, Serge (Paris, Lab. Kastler Brossel)
One of the main questions of fundamental physics is the action of gravity on antimatter. We present here the simulation of the last part of the experiment GBAR at CERN, i.e. [...]
2021 - 4 p. - Published in : 10.31526/ACP.BSM-2021.35 Fulltext: PDF; External link: Fulltext
In : The International Conference on Beyond Standard Model : From Theory To Experiment (BSM-2021), Online, 29 Mar - 2 Apr 2021
7.
Positron accumulation in the GBAR experiment / GBAR Collaboration
We present a description of the GBAR positron (e+) trapping apparatus, which consists of a three stage Buffer Gas Trap (BGT) followed by a High Field Penning Trap (HFT), and discuss its performance. The overall goal of the GBAR experiment is to measure the acceleration of the neutral antihydrogen (H) atom in the terrestrial gravitational field by neutralising a positive antihydrogen ion (H+), which has been cooled to a low temperature, and observing the subsequent H annihilation following free fall. [...]
arXiv:2205.04530.- 2022-07-25 - 28 p. - Published in : Nucl. Instrum. Methods Phys. Res., A 1040 (2022) 167263 Fulltext: PDF;
8.
A pulsed high-voltage decelerator system to deliver low-energy antiprotons / Husson, A (IJCLab, Orsay) ; Kim, B H (Seoul Natl. U., Dept. Phys. Astron.) ; Welker, A (CERN) ; Charlton, M (Swansea U.) ; Choi, J J (Seoul Natl. U., Dept. Phys. Astron.) ; Chung, M (UNIST, Ulsan) ; Cladé, P (Paris, Lab. Kastler Brossel) ; Comini, P (IRFU, Saclay) ; Crépin, P -P (Paris, Lab. Kastler Brossel) ; Crivelli, P (Zurich, ETH-CSCS/SCSC) et al.
The GBAR (Gravitational Behavior of Antihydrogen at Rest) experiment at CERN requires efficient deceleration of 100 keV antiprotons provided by the new ELENA synchrotron ring to synthesize antihydrogen. This is accomplished using electrostatic deceleration optics and a drift tube that is designed to switch from -99 kV to ground when the antiproton bunch is inside – essentially a charged particle “elevator” – producing a 1 keV pulse. [...]
2021 - 7 p. - Published in : Nucl. Instrum. Methods Phys. Res., A 1002 (2021) 165245
9.
Accumulation of Positrons from a LINAC Based Source / GBAR Collaboration
The GBAR experiment aims to measure the gravitational acceleration of antihydrogen H. It will use H + ions formed by the interaction of antiprotons with a dense positronium cloud, which will require about 1010 positrons to produce one H + [...]
2020 - 3 p. - Published in : Acta Phys. Pol. A 137 (2020) 164-166
In : 15th International Workshop on Slow Positron Beam Techniques and Applications, Prague, Czechia, 2-6 Sep 2019, pp.164-166
10.
Development of a PbWO4 Detector for Single-Shot Positron Annihilation Lifetime Spectroscopy at the GBAR Experiment / Kim, B H (Seoul Natl. U.) ; Choi, J J (Seoul Natl. U.) ; Chung, M (UNIST, Ulsan) ; Cladé, P (Paris, Lab. Kastler Brossel) ; Comini, P (IRFU, Saclay) ; Crivelli, P (Zurich, ETH) ; Crépin, P-P (Paris, Lab. Kastler Brossel) ; Dalkarov, O (Lebedev Inst.) ; Debu, P (IRFU, Saclay) ; Dodd, L (Swansea U.) et al.
We have developed a PbWO4 (PWO) detector with a large dynamic range to measure the intensity of a positron beam and the absolute density of the ortho-positronium (oPs) cloud it creates. A simulation study shows that a setup based on such detectors may be used to determine the angular distribution of the emission and reflection of oPs to reduce part of the uncertainties of the measurement. [...]
2020 - 4 p. - Published in : Acta Phys. Pol. A 137 (2020) 122-125
In : 15th International Workshop on Slow Positron Beam Techniques and Applications, Prague, Czechia, 2-6 Sep 2019, pp.122-125

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